Answer on Biochemistry Question for Jessica P

How are self-replicating molecules, such as RNA molecules in the &ldquo;RNA World&rdquo; hypothesis, essential to the most popular hypotheses about the origin of life on Earth?

Expert's answer

2012-11-20T08:27:30-0500

Most theories of the origin of life consider RNA molecules, whichpossess ribozymes activity as a primary self-replicating moleculesthat gave rise to the development of life on Earth. Results of thestudy two hypothetical groups of ribozymes are the basis of modernideas about the origin of life. First of all, this is an RNAreplicase, constructed entirely of ribonucleotides. This assumptionseems particularly attractive,because the ancient RNA molecules couldstore genetic information and have enzymatic activity necessary forthe reproduction of this information. This combination of propertiesin the RNA molecule can explain how the catalytic functions performedby modern protein molecules, as well as a function of storage andtransmission of genetic information occurred simultaneously and couldbe present in a single precursor molecule ancestors of modern cells.Theories of the origin of life which based on the originalparticipation of RNA molecules in the creation of self-replicatingsystems found strong support in connection with the opening splicingand ribozymes.

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